2012 Higher Physics Discussion

I was going to apply to St. Andrews and English unis but now I guess I can't apply to eng unis


Posted from TSR Mobile

Why not? It'll look bad applying for Maths at Cambridge with a B in Higher, but you'll still be able to apply for it And, your results haven't came through yet

Ofc I am not going to apply to Cambridge, I want to go to Imperial. I know but I am getting a feeling that I messed it up anyways how were your exams? I bet your gonna ace yours


Posted from TSR Mobile

What is you're applying for? Is it Maths? Imperial is still pretty tricky with only a B... But don't fret on it now It's too early

My exams have been mixed tbh. I'm positive I have an A in Maths, Maybe a B in Biology, but likely a C and I'm sure I failed English Oh well!

Question 3 in 2008- I usually tension = mass x acceleration, the mass you use is the mass of the object being pulled, In this case you find the overall accelaration which is a=f/m --> 12/6 which gives 2, then do the t=ma, 2x2 which gives 4.

For 5 think about the rule of how momentum before = momentum after, calculate the momentum before using p=mv and then form an equation to find the velocity after

For question 12, you use the equation v2-v1(rf/r1) to find the output voltage, as its negative its a matter of basically looking at the graph to establish which one fits your calculated answer.

Not looked at the other papers properly yet if i know how to do it ill give you a shout, if im incorrect i apologise its just the way I do it.

Yh I want to do maths wbu? Maths paper was quite tricky I just made some stupid mistakes hope they lower the grade boundary like last year. I think I'll get B/A in maths (if they lower the grade boundary), maybe a B in business (totally messed that paper up) and English is definitely a fail (especially critical essay)


Posted from TSR Mobile

Maths I've had a look at it, I've seen worse, but I can see where people would screw up, especially on Paper 2 questions 2,3,6 and 8.

I wouldn't worry about it. You'll be thinking you've done bad in everything. Everyone does really. So just forget about it, and when you post in the results thread on August the 6th and you've done so much better than you thought I will say HA.

Thanks

So question 5, before: p = mv => 5 * 200 = 1000 and then I'm still not sure what to do next :/

Q. 12: Vgain = -Rf / Ri => -10/5 = 2
=> Vgain = Vo / V1
2 = Vo / 0.2
Vo = 2 * 0.2 = 0.4 so B

Ill take a look when i get in, from what i remember you would make an algebraic equation for the momentum after, make it equal to the 1000 and solve for V was it?


& it would be negative 0.4 as its inverting.

Posted from TSR Mobile

If you got the correct answer i.e value, and somehow got the incorrect direction when stating, would you lose a mark or half a mark?

Anyone please tell me what's induced fission and spontaneous fission? And what is meant by stimulated emission and how amplification is produced in a laser? Sorry for the list of questions!


Posted from TSR Mobile

If the answer is something like 24000Pa then that is ok but you will lose half a mark if you leave an answer like 24562.3Pa as it is 'inappropriate' way of leaving your answer, they would it like 24.6kPa or something

Lets be clear here if the calculator spits out 24562.3Pa and you write this down then you won't lose any marks in the Higher (you would in the Adv. Higher though) . If you put down 24600Pa then thats ok to. If you put down 24000Pa you have rounded down by 1000Pa too many and you will lose marks then.

Is anyone else doing revised higher?


Posted from TSR Mobile

If you can scan or up quality pictures of the exam up here - ill try to do the rough workings up as soon as.
As for Revised a lot of people are doing that.
The material examples and notes can be found at LTS here

You sure, cause i was doing a past paper yesterday when i had an answer like 12345.6 and when looking at the answers i think it said deduct 1/2 a mark

If you can scan or up quality pictures of the exam up here - ill try to do the rough workings up as soon as.
As for Revised a lot of people are doing that.
The material examples and notes can be found at LTS here

In the exam cover page it states vaguely...

15 Care should be taken to give an appropriate number of significant figures in the final answers to calculations.
However a marker can't log a SF error or sig. fig. error in the Higher m.i.
Where a diagram or plot is used then appropriate accuracy (within tolerance) will be required in the final answer.

Note in the Adv. Higher the accuracy rule is enforced as two-higher (up to 2 more sig.figs allowed) or one-lower (up to one less sig. fig in answer) - such a rule is NOT enforced in the Higher - here the rule is that the accuracy must not be worse than that expected by calculation, so e.g. $R =V/I = 6.0/3.0 = 2.0\Omega$ is ok $R =V/I = 6.0/3.0 = 2\Omega$ would lose 1/2-mark ... if I write $1.999\Omega$ I should not lose any marks.

$R =V/I = 6.0/3.0 = 2.0\Omega$ is ok $R =V/I = 6.0/3.0 = 2\Omega$ would lose 1/2-mark ...

2007 Question 24b is the one that i am on about